printk: reduce setup_text_buf size to LOG_LINE_MAX

jogness · pmladek · commit 0463d04ea03a · 2020-09-30T13:54:21.000+02:00
@setup_text_buf only copies the original text messages (without any prefix or extended text). It only needs to be LOG_LINE_MAX in size. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20200930090134.8723-3-john.ogness@linutronix.de
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
@@ -1095,7 +1095,7 @@ static unsigned int __init add_to_rb(struct printk_ringbuffer *rb,
 	return prb_record_text_space(&e);
 }
 
-static char setup_text_buf[CONSOLE_EXT_LOG_MAX] __initdata;
+static char setup_text_buf[LOG_LINE_MAX] __initdata;
 
 void __init setup_log_buf(int early)
 {

Original file line number	Diff line number	Diff line change
`@@ -1095,7 +1095,7 @@ static unsigned int __init add_to_rb(struct printk_ringbuffer *rb,`
`1095`	`1095`	`return prb_record_text_space(&e);`
`1096`	`1096`	`}`
`1097`	`1097`
`1098`		`-static char setup_text_buf[CONSOLE_EXT_LOG_MAX] __initdata;`
	`1098`	`+static char setup_text_buf[LOG_LINE_MAX] __initdata;`
`1099`	`1099`
`1100`	`1100`	`void __init setup_log_buf(int early)`
`1101`	`1101`	`{`